Driver forces 10-bit output even though I selected 8-bit in nvidia-settings

Does someone know how to prevent the driver from using 10-bit color depth? The Windows driver correctly uses 8-bit (unless I enable HDR, in which case the driver switches to 10-bit.) On Linux, it always uses 10-bit, no matter what I select in nvidia-settings.

I have a 1440p 240Hz monitor, and at 240Hz, when 10-bit color is used, it enables DSC. I want to avoid that, but apparently it’s impossible in Linux while it works in Windows.

Any help? Is it possible to force 8-bit color?